Prosser has a mostly accurate track record so far with Apple rumors. Most notably, he was correct about both a second-generation iPhone SE being announced on April 15, 2020 and the 13-inch MacBook Pro being refreshed on May 4, 2020. He has shared some incorrect information, however, including the starting date of WWDC 2020 and that the new iPhone SE would have the same rear camera system as the iPhone XR.
Prosser shares most of his leaks on Twitter and claims that his information is sourced from both Apple and its supply chain. Some of his biggest rumors that remain to be seen include Xcode and Final Cut Pro coming to the iPad Pro and the iPhone 12 starting at $649 with 128GB of storage.